Cement - Types of cements - composition, properties and uses – BIS specifications, Admixtures - Plasticizers – super-plasticizers – Retarders – Accelerators – Air entraining admixtures – supplementary cementitious materials: silica fume, fly ash, metakaolin, ground granulated blast furnace slag – water proofing admixtures: Properties, advantages, dosage and application.
Workability : Definition, factor affecting workability, measurement of workability: slump test, K – slump test, compacting factor test – segregation – bleeding – steps of manufacture of concrete: batching, mixing, transporting, placing, compacting – curing of concrete - Factors affecting strength of concrete: water / cement ratio, maturity of concrete, micro – cracking and autogeneous healing – evolution of heat and expansion – shrinkage of concrete and factors affecting it.
Mix design : Introduction, concept of mix design – various mix design methods – batching of ingredients: volume batching, weigh batching – IS method and ACI method of mix proportioning- Mix Proportioning of concrete uses admixtures.
Durability : Definition, significance – permeability – chemical attack, sulphate attack – methods of controlling – thermal properties of concrete – chloride attack – concrete in sea water – resistance to abrasion and cavitations – corrosion of steel. Testing on hardened concrete: Compression test, flexural strength of concrete, direct tension test methods – factors influencing strength results – Accelerated strength tests – determination of modulus of elasticity – in situ strength determination – variation in test results – Nondestructive strength tests, ultra-sonic pulse velocity tests, and rebound hammer test.
Self-Compacting concrete, High fly ash concrete, Light weight concretes - - Fiber reinforced concrete – Ferrocement – SIFCON - Shotcrete – Polymer concrete - High performance concrete- Geopolymer Concrete
Reference Book:
1 Neville A.M., Properties of Concrete, Pearson, 2012. 2 Gambir M.L. “Concrete Technology”, Tata McGraw Hill, Publishing Co, Ltd, New Delhi, 2013. 3 Bhavikatti S.S. “Concrete Technology” I K International Publishing House, 2015 4 IS 456:2000 (Reaffirmed 2016) ‘Plain and Reinforced Concrete – Code of Practice”, BIS , New Delhi 5 IS 10262:2019 “Concrete Mix Proportioning - Guidelines”, BIS, New Delhi
Text Book:
1 Shetty M.S., Concrete Technology, S.Chand and Company Ltd., New Delhi, 2006. 2 Santhakumar A.R., Concrete Technology, Oxford University Press, New Delhi, 2009